Bags under your eyes? Lack of sleep, allergies, salty food, and smoking all can lead to under-eye puffiness. The bags usually mean fluid has collected there. One of the easiest home fixes is a cool compress. Wet a clean cloth with cold water, wring it out, and gently press over your eyes for a few minutes. Do it while sitting, not lying down. Pop the cloth in the fridge or the freezer for extra coldness.